🧩 Stringkit.js

A focused, zero-dependency utility library for common string manipulations in JavaScript. Clean API, no global prototype pollution, and built for real-world use.

✨ Features

• A suite of clean, composable string utilities
• No global prototype modifications
• Safe and immutable methods
• Designed for real-world use cases
• Fully documented and tested

📦 Installation

npm install @herb-ert/stringkitjs

If you're using ES Modules:

import * as stringkit from '@herb-ert/stringkitjs';

Or with CommonJS:

const stringkit = require('@herb-ert/stringkitjs');

🚀 Usage

import { capitalize, kebabCase } from '@herb-ert/stringkitjs';

console.log(capitalize("hello world")); // "Hello world"
console.log(kebabCase("Hello World"));  // "hello-world"

🧠 API

Functions

| Method | Description | |------------------------|------------------------------------------------------------------------------------------------------------------| | capitalize(string) | Capitalizes the first character of a string. | | title(string, smart) | Converts a string to title case. Optionally applies smart title casing to avoid capitalizing common short words. | | stripTags(string) | Removes all HTML tags from a string. | | slugify(string) | Converts a string into a URL-friendly slug. | | truncate(string, length) | Truncates a string to a specific length, appending "..." if truncated. | | camelCase(string) | Converts a string to camelCase. | | kebabCase(string) | Converts a string to kebab-case. | | snakeCase(string) | Converts a string to snake_case. | | trimLines(string) | Trims whitespace from the start and end of each line in a multi-line string. | | removeExtraSpaces(string) | Removes extra spaces from a string, reducing multiple spaces to a single space. | | isBlank(string) | Checks whether a string is empty or contains only whitespace. | | startsWithIgnoreCase(string, prefix) | Checks if a string starts with a given prefix, ignoring case sensitivity. | | endsWithIgnoreCase(string, suffix) | Checks if a string ends with a given suffix, ignoring case sensitivity.| | includesIgnoreCase(string, substring) | Checks if a string includes a given substring, ignoring case sensitivity.| | escapeRegExp(string) | Escapes special characters in a string for use in a regular expression.| | stripAnsi(string) | Removes ANSI escape codes from a string.| | repeatString(string, times) | Repeats a string a specified number of times.| | commonPrefix(strings) | Finds the longest common prefix among an array of strings.| | center(string, length, char = ' ') | Centers a string by padding it on both sides with a specified character.| | lpad(string, length, char = ' ') | Pads the left side of a string to a specified total length.| | rpad(string, length, char = ' ') | Pads the right side of a string to a specified total length.| | truncateWords(string, wordCount) | Truncates a string to a specific number of words.| | pascalCase(string) | Converts a string to PascalCase.| | reverse(string) | Reverses the characters in a string.| | assertString(value, name) | Asserts that the given value is a string. |

📦 More Examples

import {
  snakeCase,
  stripTags,
  title,
  startsWithIgnoreCase
} from '@herb-ert/stringkitjs';

console.log(snakeCase("Hello World"));                    // "hello_world"
console.log(stripTags("<p>Hello</p>"));                   // "Hello"
console.log(title("the big brown fox"));                  // "The Big Brown Fox"
console.log(startsWithIgnoreCase("JavaScript", "java"));  // true

🧪 Validation

All functions are pure and expect valid strings. Invalid types will throw helpful errors.

capitalize(42); // ❌ TypeError: Expected "string" to be a string, but got number

🔧 License

MIT © herb-ert